Elevator-gate-operating device



(No Model.) l

l 01.0. HAWKINS.

ELBVATOR GATE OPERATING DEVICE.

16.517,117; Patented Mar. 27, 1894.

UNITED STATES GEORGE O. HAWKINS,

PATENT OFFICE.

OF MARIETTA, OHIO.

ELEVATOR-GATE-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 517,117, dated March 27, 1894.

Application filed December 9. 1893. Serial No. 493.243- (No model.)

To all whom it may concern.:

Be it known that I, GEORGE C. HAWKINS, a citizen of the United States, residing at Marietta, in the county of Washington and State of Ohio, have invented certain new and useful Improvements in Elevator-Gate-Operating Devices, of which the following is a specification.

This invention is an improvement in devices for automatically opening and closing the doors, guards, or gates at the different landings of an elevator shaft or well through the medium of mechanism operated by the movement of the car or cage up and downthe well past such landings.

The objects of the invention are to provide an i'mproveddevice of this character which is simple in construction and efficient in operation, is not liable to breakage or vdisarrangement, and which may be easily applied at a moderate cost to elevators now in use aswell as to those in course of erectiomand which may be readily adjusted and set by the attendant upon the car to open any one or all of the gates at will as the car successively approaches the several landings in its travels through the well.

To these ends the invention consistsin the construction and arrangement of parts substantially as hereinafter more particularly described.

In the accompanying drawingsz--Figure 1 is a vertical central section of an elevator Well showing a car of ordinary form therein and the several iioors or landings of a building and embodying my improvements. Fig. 2 is a similar view with the gate operating devices in a different position; and Fig. 3 is a cross section.

The frame Work of the elevator shaft or Well may be of any suitable construction, but as shown it consists of corner posts A, and guides B, between which latter a carer cage O moves and is guided as usual, and these posts and guides extend from the bottom to the top of the well and are properly braced and connected to the various doors D of the building, in any convenient manner.

The several openings into the well at the ioors or landings are normally closed by guards or gates E, which as preferred, are

movable vertically between the posts A in guide ways a therein, although the gates may obviously slide horizontally across the open.- ings or be hinged therein according to circumstances.

In the well opposite or near each landing is a lever F, which normally occupies a substantially vertical position, and as shown this lever is pivoted at its lower end f to a cross piece g of the frame work. The upper free end of each lever F is connected at h to a chain or rope c' which passes round pulleys j and 7c secured respectively to one of the guide posts B and to the lever, and passes thence over a pulley Zon one of the corner posts, round a pulley m at the top of the opening to the well, and to the adjacent guard or gate E, where the rope is attached at In, all as appears clearly in the drawings. It will thus be seen that when any one of the levers F is swung to one side, it draws upon the chain or rope and elevates the ad jacent guard or gate giving free access to the j well, and as the lever again resumes its normal position the gate descends and closes by gravity. But should other than vertically movable gates be employed they may be made to close positively by springs or other device commonly used for this purpose. The means upon the car and under the control of the operator thereon for automatically opening the gates as desired by shifting the levers F as the car successively arrives at the landings, consists of two bars G, G, each pivoted about midway of its length to the outer end of an arm ,o secured to one of the upright side pieces of the car. These bars G, G, are jointed together at their adjacent ends by a loose connection Vor pin 1o, while their free ends are beveled at q s0 that when the bars are adjusted to the 'oppositely inclined position shown in the lower portion of Fig. l, the beveled ends will lie closely against the part x of the car. A rod or handle H placed within easy reach of the attendant on the car, is connected at its outer end to the bars G, preferably at the loose connection or pin p, and serves as a ready means of swinging or adjusting said bars from their normal vertical position to a reversely inclined position, or vice versa, and to lock them in' either of said positions. After adjustment the handle TOO may be secured in position in any convenient way, as for instance, by a pin y engaging one of the notches e' therein.

It will of course be understood that all the levers F in the Well are arranged in the same vertical plane and in the path of movement of the bars G on the car, when the bars are adjusted as in Fig. 1, so that if the operator wishes to effect the opening of the door at any particular landing as the car nears the latter preparatory to stopping there, he may easily do so by pushing the handle H outward and thereby adjusting the bars to their reversely inclined position. The one or the othor of the bars G according to the direction of movement of the cage, then comes in contact with a friction roller U at the side of the lever F, and shifts the latter from its vertical position to automatically open the gate, the parts being so adjusted that when the said roller is at the apex of the double incline the floor of the cage will be on a level with the landing and the gate fully opened. As the car leaves the landing the roller o rides down the opposite incline thus permitting the gate to close gradually.

"When the bars G are 1n their normal vertical position, as in Fig. 2, the levers F are not disturbed by the movement of the cage up and down the well, the levers remaining upright and the rollers Av thereon passing freely behind said bars, thus permitting the gates to remain closed. 0n the other hand should it be desired at any time to operate all the guards or gates successively as the landings are reached in their order by the car, the bars G may be properly adjusted for this purpose and allowed to remain so as long as required. v

Although I have illustrated my invention in connection with a platform or freight elevator, it will be understood that it may with equal facility be applied to the various forms 0f passenger elevators as well, audit will further be apparent that the number and arrangement of pulleys shown for guiding the chains or ropes extending to the gates may be varied according to the conditions of each particular case.

The improved device herein set forth is composed of few parts not liable to disarrangement or breakage, while at the same time it is eiicient and simple of operation and may readily be applied at slight expense to existing elevators, as well as to those in course of erection.

Writhout limiting myself to the exact construction and arrangement shown, I claiml. In a guard operating device for elevator Wells, the combination with a lever pivoted in the Well, a gate, and connections between the lever and gate, of arms at the side of the car, jointed bars pivoted about mid-way of their length to the outer ends of said arms and adjustable into position to engage said lever, said bars when in their normal position permitting the passage of the lever between the bars and car, an operating handle to adjust the bars, and a locking device for securing the handle and bars in either of their positions, substantially as described.

2. In a guard operating device for elevator wells, the combination with the levers pivoted in the well, the gates, and connections between the levers and gates, of two connected bars beveled at their free ends and pivoted to arms at one side of the car in line to engage said levers, an operating handle having notches to adjust said bars, and a retaining pin for said handle, substantially as described.

3. In a guard operating device for elevator wells, the combination with the levers F, the gates E, ropes c', and pulleys j, 7e, Lm, the bars G, having beveled ends q and pivoted to arms 0 on the car, the notched handle H connected to the bars, and the retaining pin y,substan tially as described.

In testimony whereof I have signed `my name to this specification in the presence of two subscribing witnesses.

GEORGE C. IIAWKINS.

Witnesses:

CHARLES H. NIKON, WM. H. LEEPER. 

